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Alpha Delta Model Delta-4B - 4 Position Coaxial Antenna Switch, UHF
They are built with powder coated cases and are designed with micro-strip constant impedance cavity construction for best performance. They have a precision internal rotating mechanism with positive detent action for exact switch position indication.
These can be used to run 4 radios and 1 antennas or 4 antenna and 1 radio
Specification:
Antenna Switch Positions: 4-port
Switch Impedance: 50 ohms
Connector: UHF Female (SO-239)
High Strength Solder Connections
Built In ARC-Plug (tm) Surge Protector
designed for low loss performance
Size : 5.250 (W) x 3.500 (H) x 1.250 in.(D) excluding connectors and knob
Switch Insertion Loss: Less than 0.10 dB
All Antenna Ports Grounded Position: Yes
Power Rating (0 to 30 MHz): 1,500 Watts PEP/1,500 CW
Rated through 500 MHz 0.10 dB loss to 30 MHz, less than 0.5 dB through 450 MHz
Note: When placed in the "COM" position, all switch positions are grounded. When a port is selected, that port is un-grounded while all other ports remain grounded.
1 Review
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It works well and is a convienient Surge Protector
As subject says works well, especially like that I can protect my system from 2 or 3 antennas getting hit by lightning with one device. Did have to drill out the hole for the ground connection so I could use same cap screw as on my copper ground bar and need to anchor the other hole in it with some washers underneath to equal out the height of the cap on the cap screw. So of the 4 connectors I am using 2 for HF antennas and one for a dummy load, next undecided antenna will get the last port. My VHF/UHF I do not hook to it. The VHF/UHF goes directly to my SWR/Wattmeter VHF/UHF antenna port then to my IC-7100 VHF/UHF port. The common on the Alpha Delta also goes to my SWR/Wattmeter HF antenna port, then has a 2 way switch to direct HF either to my IC-7100 or my IC-7300. I do have another 2-way if I want to ever hook up my GMRS radio again. The VHF/UHF antenna has to have its own lightning protection since I do not pass it through this device.
